forge

An implementation workflow for carrying out an existing software change after reading its plans, specifications, design, and task list.

In plain words
What is it for?
Use it to select a change, review its context, break it into steps, and implement the remaining tasks.
Why use it?
It prevents coding from starting without understanding the full change and its current progress.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/devnomad-byte/techneering/forge
Any agent
npx skills add devnomad-byte/techneering --skill forge
Clone the repo
git clone --depth 1 https://github.com/devnomad-byte/techneering

Made for: Claude Code, Codex.

Per session 23 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,004 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00023 $0.01004
Opus 5 $0.00012 $0.00502
Sonnet 5 $0.00005 $0.00201
Haiku 4.5 $0.00002 $0.00100

Measured 2d ago against content hash 970d0d966f8a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

forge scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/forge/SKILL.md · 143 lines

How it starts

The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Forge a Change

Implementation entry point. Load change artifacts, then chain to tn:blueprint for task breakdown and tn:assemble for execution.

Core Principle

READ ALL CONTEXT BEFORE WRITING ANY CODE.
Load every artifact. Understand the full picture. Then implement.

Steps

Step 1: Select the Change

If a name is provided, use it. Otherwise:

  • Infer from conversation context if the user mentioned a change
  • Auto-select if only one active change exists in techneering/changes/
  • If ambiguous, list all active changes with progress info and ask the user to select

Always announce: "Using change: "

Step 2: Load Context

Read all artifacts from the change directory:

  • techneering/changes/<name>/proposal.md
  • techneering/changes/<name>/specs/**/*.md
  • techneering/changes/<name>/design.md
  • techneering/changes/<name>/tasks.md

Also read techneering/config.yaml for project context.

Step 3: Show Current Progress

Parse tasks.md for checkboxes: - [ ] (pending) vs - [x] (complete).

Display:

  • Change name and schema
  • Progress: "N/M tasks complete"
  • Remaining tasks overview

Step 4: Create Implementation Plan (tn:blueprint)

Invoke the tn:blueprint skill to break down the tasks into bite-sized implementation steps:

  • Exact file paths
  • Complete code for each step
  • Verification commands with expected output
  • No placeholders

Step 5: Execute with Assemble (tn:assemble)

Invoke the tn:assemble skill to execute the plan:

  • Each task gets a fresh subagent
  • Two-stage review per task: spec compliance → code quality
  • Independent tasks can run in parallel (max 3 concurrent)
  • Follow tn:redgreen for each task (red-green-refactor)
  • Use tn:diagnose if issues arise

Step 6: Track Progress

After each task completes:

  • Mark the corresponding checkbox in tasks.md: - [ ]- [x]
  • Report progress: "Task N/M complete"

Step 7: On Completion

Display:

## Implementation Complete

**Change:** <change-name>
**Progress:** N/N tasks complete

### Completed This Session
- [x] Task 1
- [x] Task 2
...

All tasks complete! Proceed to tn:gate to verify.

Read the full file on GitHub · 143 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 143 lines · 23 tokens per session scan A 970d0d966f8a

Subscribe to this mod's changes

forge is a skill published in the GitHub repository devnomad-byte/techneering (13 stars, last pushed 2mo ago), licensed MIT. It adds 23 tokens to every session and 1,004 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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